Looking for Sales Navigator Advanced Plan to Rent for CSV Upload

Anyone using Sales Nav Advanced or Advanced Plus? If yes, does anyone have an extra plan I can rent for a month? 🙏 I’m on Core and only need the CSV upload for 2 weeks. Why? I’m building a list of 1,300 accounts for a customer who wants to know which of their 942K LinkedIn followers are on it. Core Sales Nav doesn’t allow CSV uploads. The goal is to score the account list based on who and how many people follow them on Linkedin so their sales team can contact them first, only for this account list of 1300 accounts. Or, does anyone know a better way to do this?